Attributes for AD Users : homePhone
The Active Directory attribute homePhone can contain the private telephone number of the user.
homePhone
| LDAP name | homePhone |
| Data type | String (max 64) |
| Multivalue (Array) | No |
| System Flags | 0x10 |
| Search Flags | 0x0 |
| In Global Catalog? | Yes |
| Attribute ID | 0.9.2342.19200300.100.1.20 |
| AD DB attribute name | Phone-Home-Primary |
| ADSI datatype | 3 - String(Unicode) |
| LDAP syntax | 1.3.6.1.4.1.1466.115.121.1.15 - Directory String |
| Used in ... | > W2K |
| Schema Info | Microsoft - MSDN |
This field isn't used directly from the Active Directory system, it is a pure info attribute without technical meaning. However, the telephoneNumber attribute is could be used used if some unified messaging system is installed which is based on Active Directory data.
Please note that there is another multivalue attribute named telephoneNumber, which can hold a list of additional telephone numbers for the user.